Pregnant women who drink a mouthful of spoiled soup can be observed if there is no abnormality in both the pregnant woman and the fetus. If there are gastrointestinal symptoms, antiemetic, antidiarrheal symptomatic treatment, hospitalization, etc. are needed. 1. Observation: pregnant women who drink a mouthful of spoiled soup, if there is no obvious discomfort symptoms, can be observed, do not need treatment. But pregnant women need to eat light and nutritious food, avoid eating moldy, spoiled food. Pay attention to rest, ensure adequate sleep, maintain a good state of mind, regular pregnancy tests. 2. Antiemetic and antidiarrheal symptomatic treatment: If a pregnant woman has nausea, vomiting, diarrhea and other symptoms after drinking a mouthful of spoiled soup, she needs to consult a doctor in time, and use probiotics, montelukast and other drugs for antiemetic and antidiarrheal treatment. 3. Hospitalization: If a pregnant woman develops severe nausea, vomiting, dehydration and other conditions after taking a sip of spoiled soup, she may need to be hospitalized for systematic treatment. Pregnant women who drink a mouthful of spoiled soup should be treated under the guidance of a professional doctor according to the specific condition.